阶结构对FeCl_3-NiCl_2-GICs微波吸收性能的影响

EFFECTS OF STAGE STRUCTURE ON MICROWAVE ABSORPTION PROPERTIES OF FeCl_3–NiCl_2–GICs

通过调节反应参数制备出不同阶结构的三元FeCl3–NiCl2–石墨层间化合物(graphite intercalation compounds,GICs),考察了阶结构对FeCl3–NiCl2–GICs的导电性能和微波吸收性能的影响。结果表明:FeCl3–NiCl2–GICs是一种介电损耗型微波吸收材料,其微波吸收特性与FeCl3–NiCl2–GICs的电导率有密切的关系,电导率过高时其微波吸收性能下降。与电导率随阶数的变化规律相反,最大反射损耗量随阶数增大先减小后增大。一阶FeCl3–NiCl2–GICs的最大反射损耗量高达–10.3dB。

Ternary FeCl3-NiCl2-graphite intercalation compounds （GICs） with different stage structures were synthesized under different reaction conditions. The effects of stage structure on the electrical conductivity and microwave absorption properties of FeCl3-NiCl2-GICs were investigated. The results show that the FeCl3-NiCl2-GICs are dielectric loss microwave absorption materials. Moreover, their microwave absorption properties are related to their electrical conductivity. When the electrical conductivity is too high, the properties of microwave absorption descend. With the increasing of stage, the maximum theoretical reflection loss decreases first, then increases. This is different from the change characteristic of the electrical conductivity with the stage. The maximum theoretical reflection loss of the 1 st stage FeCl3-NiCl2-3IC is -10.3 dB.